Renal malperfusion: spontaneous renal artery dissection and with aortic dissection

Renal malperfusion associated with renal artery dissection can present as either an isolated disease process or in the setting of branch vessel stenosis complicating aortic dissection. Isolated renal artery dissection is a rare disorder, the clinical presentation of which often presents both diagnostic and therapeutic challenges. The true incidence and natural history of this phenomenon also remain unclear. Multiple approaches to management have been described. Medical therapy typically consists of anticoagulation and blood pressure management and is reserved for cases with well-controlled symptoms and blood pressure and preserved, stable renal function. Historically, surgical reconstruction with in situ or more complex ex vivo reconstruction has been described for the treatment of uncontrolled hypertension with preservation of renal perfusion. Nephrectomy, either partial or total, for control of hypertension, is reserved for cases where parenchymal injury necessitates this radical intervention. Recently, endovascular stenting of the renal artery has shown excellent and durable results and is now considered to be the first-line intervention for renal artery dissection. Renal malperfusion associated with complicated aortic dissection is a different entity and one that is consistently an independent predictor of poor prognosis. The pathogenesis of malperfusion can be dynamic, static, or a combination. In addition, renal hypoperfusion may occur with or without extension of the intimal flap into the renal artery itself. Traditional open surgical interventions to treat aortic dissection with malperfusion have a very high perioperative mortality rate. Endovascular fenestration and stenting of both the thoracic aortic and it’s branch vessels have significantly improved clinical outcomes in complicated aortic dissections relative to open surgical fenestration. Although a significant body of long-term data has yet to be accumulated, endovascular stent grafting has the added advantage over fenestration that it may affect aortic remodeling and prevent the very morbid complication of aneurysmal degeneration.     

Percutaneous balloon fenestration and stenting for life-threatening ischemic complications in patients with acute aortic dissection.

OBJECTIVES: Acute aortic dissection frequently causes life-threatening ischemia of end-organs, historically associated with mortality exceeding 60%. Reperfusion with the use of interventional radiologic methods has evolved as a promising treatment. We report results of our initial 6 years of experience with percutaneous balloon fenestration of the intimal flap and endovascular stenting. METHODS: Forty patients (32 male and 8 female) with a median age of 53 years (range 16-86 years) underwent percutaneous treatment for peripheral ischemic complications of 10 type A and 30 type B acute aortic dissections since 1991. Twenty patients had ischemia of multiple organ systems. Thirty patients had renal, 22 had leg, 18 had mesenteric, and 1 had arm ischemia. RESULTS: Fourteen patients were treated with stenting of either the true or false lumen combined with balloon fenestration of the intimal flap, 24 with stenting alone, and 2 with fenestration alone. Successful revascularization was achieved in 93% +/- 4% (+/-70% confidence levels) of patients (37/40). Nine patients had procedure-related complications. The 30-day mortality rate was 25% +/- 7% (10/40), often related to irreversible ischemia of intra-abdominal organs that was present before the procedure. Of the remaining 30 patients, 5 have died and the remaining 25 continue to have relief of ischemic symptoms at a mean follow-up of 29 months. CONCLUSION: Percutaneous balloon fenestration of the intimal flap and endovascular stenting is an effective treatment for life-threatening ischemic complications of acute aortic dissection.     

Management of vital organ malperfusion in acute aortic dissection: proposal of a mechanism-specific approach

OBJECTIVE: We report our strategy for malperfusion accompanying acute aortic dissection, especially that involving the abdominal organs, which is based on the mechanism and includes percutaneous management. METHODS: From 1991 through October 2005, a total of 38 of 135 (28%) patients with acute dissection presented with organ malperfusion. Altogether, 31 had type A dissection. The involved vascular territories were coronary in 8, brain in 16, celiac and superior mesenteric in 6, renal in 10, and lower limb in 13. For the abdominal organs, the mechanisms of the malperfusion were classified into the aortic type (n = 3) and the branch type (n = 13). The branch type was further divided into the orifice type (n = 8) and distal type (n = 5). All but one patient with type A dissection underwent a central aortic operation with resection of the entry site. Revascularization of the ischemic organ was added by bypass grafting or direct reconstruction. Distal organ malperfusion accompanying type B dissection was treated by the mechanism-specific approach. That is, the aortic type was treated by surgical fenestration, whereas the branch type was treated by percutaneous stenting. RESULTS: The one hospital death (2.6%) was due to brain infarction. Although a central aortic operation alone successfully reversed aortic-type malperfusion in all three patients, it was not effective for branch-type malperfusion in five of six vascular territories. Surgical fenestration did not successfully reverse branch-type renal malperfusion in two patients. Percutaneous stenting was successful in all three vessels with branch-type malperfusion. CONCLUSION: Central aortic operation or fenestration is effective for aortic-type malperfusion, whereas the branch type may require stenting or bypass grafting.     

Surgical strategies for organ malperfusions in acute type B aortic dissection

This study is retrospectively to evaluate strategies for organ malperfusion on the view point of two mechanisms (true lumen collapse in the aorta=Ao type, or branch dissection=Br type) in acute type B aortic dissection. There were 16 of Ao type and 4 of Br type in 20 patients with organ malperfusion. In Ao type, we performed entry closure in 12 patients, surgical bypass grafting in two to superior mesenteric artery (SMA) in one and femoral artery in two, and surgical fenestration in two. In Br type, we performed interventional non-covered stenting to the orifice of visceral arteries in two patients, surgical bypass to SMA with ileum resection in one, and surgical bypass to SAM and renal arteries in one. Five patients in 16 of Ao type died within 30 days that had two multiple organ failure after entry closure, one aortic injury during endovascular stent graft repair, two more multiple organ failure after femoral bypass, however, all four patients in Br type were rescued. Central aortic operation to true lumen collapse with entry closure for Ao type ischemia and organ reperfusion with extra-anatomical bypass or non-covered stent to ischemic arteries for Br type ischemia should be performed before catastrophic status.     

Placement of a branched stent graft into the false lumen of a chronic type B aortic dissection

The treatment of chronic type B aortic dissections remains challenging and controversial. Currently most centers advocate open or endovascular intervention for patients with evidence of malperfusion, rupture or impending rupture, continued pain, or aneurysm formation. Regardless of the type of intervention, the incidence of complications or death remains high, even when undertaken in an elective setting. The standard endovascular treatment usually involves placement of a stent graft into the true lumen of the dissection in an effort to exclude the false lumen. This case report describes the placement of a branched stent graft into the false lumen of a patient with chronic type B dissection to encourage exclusion and thrombosis of the true lumen whilst maintaining flow to all visceral vessels.     

Aortic fenestration for acute or chronic aortic dissection: an uncommon but effective procedure

BACKGROUND: Aortic fenestration is rarely required for patients with acute or chronic aortic dissection. To better define its role and the indications for its use and to evaluate its success at relieving organ or limb malperfusion, we reviewed our experience with direct fenestration of the aorta. METHODS: A retrospective analysis of all consecutive aortic fenestrations performed between January 1, 1979, and December 31, 1999, was performed. Fourteen patients, 12 men and two women (mean age, 59.6 years; range, 43-81), underwent fenestration of the aorta. All patients were hypertensive and had a history of tobacco use. By Stanford classification, there were three type A and 11 type B patients. In the acute dissection group (n = 7), indications for surgery were malperfusion in six patients (leg ischemia, 4; renal ischemia, 5; bowel ischemia, 3) and intra-abdominal bleeding from rupture in two. In the chronic dissection group (n = 7), indications for surgery were abdominal aortic aneurysm in 4 patients (infrarenal, 3; pararenal, 1), thoracoabdominal aneurysm in 1, hypertension from coarctation of the thoracic aorta in 1, and aortic occlusion with disabling claudication in 1. RESULTS: Emergency aortic fenestration was performed in seven patients (surgically for 6 and percutaneously for 1). Fenestration level was infrarenal in four and pararenal in three. Concomitant abdominal aortic graft replacement was performed in four patients, combined with ascending aortic replacement (n = 1) and bilateral aortorenal bypasses (n = 1). In two patients, acute fenestration was performed for organ malperfusion after prior proximal aortic replacement (ascending aorta, 1; descending thoracic aorta, 1). Seven elective aortic fenestrations were performed for chronic dissection (descending thoracic aorta, 2; paravisceral aorta, 2; infrarenal aorta, 2 and pararenal aorta, 1). Concomitant aortic replacement was performed in six patients (abdominal aorta, 5; thoracoabdominal aorta, 1). Fenestration was successful at restoring flow in all 10 patients with malperfusion. Operative mortality for emergency fenestration was 43% (3/7). The three deaths that occurred were of patients with anuria or bowel ischemia, or both. There were no postoperative deaths for elective fenestration. At a mean follow-up of 5.1 years, there were no recurrences of malperfusion and no false aneurysm formations at the fenestration site. CONCLUSION: Fenestration of the aorta can effectively relieve organ or limb ischemia. Bowel ischemia and anuria are indicators of dismal prognosis and emergency fenestration in these patients carries a high mortality. Elective fenestration combined with aortic replacement can be performed safely in chronic dissection. Aortic fenestration is indicated for carefully selected patients with malperfusion and offers durable benefits.     

Three-channeled aortic dissection: selection of surgery based on the images

Three patients with 3-channeled dissection were operated upon. Images of the dissection were enlargement of the false lumens, compression of the true lumen by enlarged false lumens and visceral arteries of false lumen origin. These prevent the use of cardiopulmonary bypass (CPB) and cause malperfusion of the viscera. Three-channeled dissecion is easy to rupture for its peculiar anatomy and total repair of the thoraco-abdominal aorta is mandatory. Fenestration brings functional recovery of malperfused viscera and enables the patients to be placed on CPB for total repair. Two patients underwent infrarenal and descending aorta fenestration followed by the total repair of thoraco-abdominal aorta successfully. A third patient has been placed on the strict CT follow-up following the infrarenal fenestration.     

Mid-term outcome with surgery for type B aortic dissections: a single center experience

BACKGROUND: The approach to acute and chronic type B aortic dissection has changed significantly over the past years. In this aspect, we have reviewed our single-center experience in surgery for type B dissections and compared the current data presented by other centers. METHODS: Twenty-nine patients operated at our center for type B aortic dissection (14 acute, 15 chronic) were reviewed over the years between 1996 and 2004. All patient data in addition to immediate and late outcome following surgery were noted. RESULTS: The mean age in acute and chronic groups was 53 +/- 16 versus 62 +/- 12 years, respectively (p = 0.1). Hospital mortality was 4 patients. The mean period in the intensive care unit was 4.2 +/- 3.1 days. Follow-up time was 36 +/- 11 months. Median interval between the initial symptoms and surgery was 3.8 days for acute cases. No patients underwent reoperation in acute patients; whereas 3 underwent reoperation in the chronic group. False lumen patency rates in acute and chronic dissections were 16.7% versus 46% after 24 months (p< 0.05). Distal anastomoses included both true and false lumens in 83% of the chronic cases with false lumen patency. The mean reoperation-free survival was 79.35 months with standard error of 5.57 months (95% CI, 68.42 to 90.27) in all patients. CONCLUSIONS: Open surgery in acute type B dissections yielded excellent immediate and long-term durability in our series with no false lumen patency or aortic expansion. However, incorporation of both false and true lumina into distal anastomosis in patients with chronic dissection resulted in false lumen patency with aortic expansion.     

Fate of the false lumen after surgery and assessment of operative procedure for DeBakey IIIb dissecting aortic aneurysm

Eighteen patients with DAA IIIb were divided into two groups. Seven patients with major abdominal arteries originated from true lumen (group I) and 11 ones with renal artery or arteries from false lumen (group II). group I: In early postoperative phase (25-55 days), the descending aortic false lumen had been thrombo-occluded in all patients and the upper abdominal aortic false lumen had been still enhanced in three. In late postoperative phase (9-35 mos.), false lumen had been disappeared in three patients, so those aortae appeared normal morphologically and in other three patients thrombo-occluded false lumen reduced in size. group II: There were re-entries and the false originated renal arteries were well perfused in all patients. In nine patients with no leakage at anastomotic site, these descending aortic false lumens were thrombo-occluded. But as in the upper abdominal aortic false lumens, there was still enough blood flow to perfuse the false originated renal arteries. These suggest that the complete entry closure is the most important, so we recommend to graft the descending aorta containing entry with prosthesis, and this operation leads false lumen to 1) thrombo-occlusion, 2) absorption of thrombus and finally 3) normalization of injured aorta morphologically.     

Endograft exclusion of acute and chronic descending thoracic aortic dissections

OBJECTIVES: To analyze the results of endograft exclusion of acute and chronic descending thoracic aortic dissections (Stanford type B) with the AneuRx (n = 5) and Talent (n = 37) thoracic devices and to compare postoperative outcomes of endograft placement acutely (<2 weeks) and for chronic interventions. METHODS: Patients treated for acute or chronic thoracic aortic dissections (Stanford type B) with endografts were included in this study. All patients (n = 42) were enrolled in investigational device exemption protocols from August 1999 to March 2005. Three-dimensional computed tomography reconstructions were analyzed for quantitative volume regression of the false lumen and changes in the true lumen over time (complete >95%, partial >30%). RESULTS: Forty-two patients, all of whom had American Society of Anesthesiologists (ASA) risk stratification > or =III and 71% with ASA > or = IV, were treated for Stanford type B dissections (acute = 25, chronic = 17), with 42 primary and 18 secondary procedures. All proximal entry sites were identified intraoperatively by intravascular ultrasound (IVUS). The procedural stroke rate was 6.7% (4/60), with three posterior circulation strokes. Procedural mortality was 6.7% (4/60). The left subclavian artery was occluded in 11 patients (26%) with no complaints of arm ischemia, but there was an association with posterior circulation strokes (2/11) (18%). No postoperative paraplegia was observed after primary or secondary intervention. Complete thrombosis of the false lumen at the level of endograft coverage occurred in 25 (61%) of 41 patients < or =1 month and 15 (88%) of 17 patients at 12 months. Volume regression of the false lumen was 66.4% (acute) and 91.9% (chronic) at 6 months. Lack of true lumen volume (contrast) increase and increasing false lumen volume (contrast) suggests continued false lumen pressurization and the need for secondary reintervention. Thirteen patients (31%) required 18 secondary interventions for proximal endoleaks in 6, junctional leaks in 3, continued perfusion of the false lumen from distal re-entry sites in 3, and surgical conversion in 4 for retrograde dissection. CONCLUSIONS: Preliminary experience with endografts to treat acute and chronic dissections is associated with a reduced risk of paraplegia and lower mortality compared with open surgical treatment, the results of medical treatment alone, or a combination.     

Toronto PowerWire fenestration technique to access false lumen branches in fenestrated endovascular aneurysm repair for chronic type B dissection

Chronic type B aortic dissection with aneurysmal degeneration requiring intervention presents significant therapeutic challenges. Thoracic endovascular aortic repair with a fenestrated endograft is a feasible option, but false lumen branches without an adjacent re-entry or perforation in the septum can pose a significant challenge. We present two cases of fenestrated endovascular aneurysm repair for chronic type B aortic dissection in which a renal artery from the false lumen was cannulated by creating a “neofenestration” through the dissection flap using a radiofrequency PowerWire (Baylis Medical Inc, Montreal, Quebec, Canada) technique (Toronto PowerWire fenestration technique).     

Common celiacomesenteric trunk: aneurysmal and occlusive disease

Eighteen patients (14 men, 4 women), ages 24 to 77 years, with a common celiacomesenteric trunk (CMT) were treated between 1965 and 2004 at the University of Michigan. Four patients had CMT aneurysmal or occlusive disease that led to operative treatment. Pertinent arteriographic findings in these 4 patients included a CMT aneurysm (n = 2), an occluded proximal CMT (n = 1), and a type III aortic dissection that was compressing the CMT (n = 1). Therapy in these 4 patients included placement of a polytetrafluoroethylene bypass graft from the supraceliac aorta to the CMT (n = 2) or a Dacron bypass graft from a thoracoabdominal bypass to the CMT (n = 1), and endovascular fenestration of the septum between the true and false lumens of an aortic dissection at the level of the CMT (n = 1).     

Endovascular treatment of aortic dissections and thoracic aortic aneurysms

Diseases of the thoracic aorta pose a significant challenge to the surgeon because of the complexity of the disease and the characteristics of the patient population. Frequent comorbidities and increasing age account for mortality rates between 5% and 20% for surgical repair of descending thoracic aortic aneurysms and in excess of 50% for Stanford type B aortic dissections, when complicated by preoperative end-organ ischemia. Endovascular techniques of fenestration, stenting, and stent-grafting have emerged as viable alternatives to conventional surgery in these patients. The authors review their experience using endovascular stent-grafts in the treatment of 103 patients with descending thoracic aortic aneurysms and 19 patients with acute aortic dissections. Fenestration and stenting are also addressed as adjuvant therapies in the treatment of complicated aortic dissections. Actuarial survival for aneurysms was 81% +/- 5% at 1 year and 73% +/- 5% at 2 years. Stent-grafting for acute aortic dissections achieved instant relief of symptoms in 71% of cases with an early procedural mortality of 16%, and endovascular revascularization of ischemic beds was achieved in 93% +/- 4% of cases of peripheral or visceral ischemia. The authors' experience supports the use of endovascular techniques in the treatment of thoracic aortic pathologic conditions. Longer follow-up and results of ongoing trials that use newer devices will help define the indications for their future use.     

Delayed visceral malperfusion after Bentall procedure for type A acute aortic dissection

Rapid restoration of flow into the true lumen and obliteration of a false lumen is considered the optimal approach to treating malperfusion syndrome due to acute aortic dissection. However, organ malperfusion can occasionally persist after proximal aortic graft replacement despite redirecting blood flow into the true lumen. A 35-year old man underwent the modified Bentall procedure for Stanford type A acute aortic dissection without organ malperfusion. Ischaemia of the visceral and lower extremities developed on postoperative day 8. Enhanced computed tomography (CT) revealed a thrombus in the false lumen interfering with the true lumen above the celiac trunk. We immediately performed a left axillary-to-bilateral femoral artery bypass. The patient recovered uneventfully and was discharged on postoperative day 28. Although organ malperfusion persisting after proximal aortic graft replacement despite redirecting blood flow into the true lumen is rare, close observation remains imperative after central repair of type A dissection.     

急诊腔内修复术治疗合并灌注不良综合征的急性Stanford B型主动脉夹层

目的：探讨急诊行腔内修复术治疗合并灌注不良综合征的急性Stanford B型主动脉夹层的疗效及安全性。 方法：2006年1月—2013年12月,共收治23例合并灌注不良综合征的急性Stanford B型主动脉夹层患者,患者治疗前均经全主动脉CT血管造影确诊。其中男16例,女7例,年龄42~68岁;合并肾动脉灌注不良8例（单侧6例）,肠系膜上动脉灌注不良9例,单侧下肢动脉灌注不良5例,脊髓灌注不良1例;17例患者急诊行腔内修复术及相关辅助治疗,6例患者拒绝手术,予保守治疗。 结果：6例保守治疗患者均在2周内死亡。17例接受急诊手术患者均予覆膜支架封堵主动脉第一破口,其中13例封堵第一破口后,分支动脉灌注不良改善;1例第一破口位于降主动脉中段,先植入裸支架,扩张主动脉真腔后,再植入覆膜支架封堵第一破口;3例封堵第一破口后,尚需再植入单侧肾动脉或肠系膜上动脉裸支架。术后30 d无死亡病例。17例均随访3~36个月,1例术后半年死于心肌梗死,余均存活且未出现支架相关并发症。 结论：对于合并器官灌注不良的急性Stanford B型主动脉夹层患者,急诊行腔内修复术,恢复脏器供血,是挽救生命的重要方法。     

Spinal cord malperfusion caused by using the segmental clamp technique during descending aortic repair for chronic type B aortic dissection

Several effective strategies for spinal cord protection have been advocated in descending and thoracoabdominal aortic repairs. The segmental clamp technique has been known as a useful adjunct to shorten the duration of spinal cord ischemia. However, we experienced two cases of spinal cord malperfusion during segmental aortic clamping in descending aortic repair for chronic type B aortic dissection. In these patients, the intercostal arteries including the Adamkiewicz artery had originated from the false lumen. In one patient, spinal cord ischemia was initially detected as decreased motor-evoked potentials. Transesophageal echocardiography simultaneously revealed blood flow congestion in the false lumen during segmental aortic clamping and spinal cord ischemia had developed due to malperfusion of the intercostal arteries branching from the false lumen. Segmental clamping in patients with aortic dissection may not always be useful for shortening the duration of spinal cord ischemia. Transesophageal echocardiography as well as motor-evoked potentials is a useful modality for obtaining the details of intraoperative blood flow in dissecting lumens and malperfusion of the intercostal arteries related to spinal cord injury.     

Early and mid-term results of endovascular stent grafting for aortic aneurysms]

Early and mid-term clinical results of 28 cases of endovascular stent grafting for descending thoracic aortic aneurysms and 11 cases of abdominal aortic aneurysms are reported. Early clinical results: Among 28 patients (7 true thoracic aortic aneurysms, 3 pseudothoracic aortic aneurysms and 8 acute, 4 subacute, and 6 chronic aortic dissections), two patients (7.1%) with ruptured acute aortic dissection or ruptured infected pseudoaneurysm died in the perioperative period. Two of the remaining 26 patients experienced minor complications. Aneurysmal sacs or false lumens at the descending thoracic aorta were completely thrombosed in the 26 patients. One patient (9.1%) with a ruptured abdominal aneurysm died, and one of the remaining 10 patients had renal and peripheral emboli and peripheral vascular trauma. Inadvertent covering of the renal arteries occurred in another patient. Unless one patient had persistent endoleak, aneurysmal sacs in the 10 surviving patients were thrombosed. Mid-term clinical results: One aortic dissection at a different section of the descending aorta occurred 6 months after stent grafting for aortic dissection, and one patient died of pneumonia 3 months after stent grafting for an abdominal aortic aneurysm. CT scanning 6 months after stent grafting revealed a decrease in maximal aneurysmal size in 3 of 9 patients with true or pseudothoracic aneurysms and in 2 of 5 patients with abdominal aortic aneurysms. Five of 9 patients with stent grafting for acute or subacute dissection showed elimination of the false lumen in the descending thoracic aorta in a CT scan 6 months after grafting. One patient with a true thoracic aneurysm and one patient with an abdominal aortic aneurysm showed an increase in aneurysmal size in a CT scan 2 years and one year after treatment, respectively.     

Impact of proximal seal zone length and intramural hematoma on clinical outcomes and aortic remodeling after thoracic endovascular aortic repair for aortic dissections

Objective

Thoracic endovascular aortic repair (TEVAR) has become standard treatment of complicated type B aortic dissections (TBADs). Whereas adequate proximal seal is a fundamental requisite for TEVAR, what constitutes “adequate” in dissections and its impact on outcomes remain unclear. The goal of this study was to describe the proximal seal zone achieved with associated clinical outcomes and aortic remodeling.

Experience with endovascular grafts in the treatment of infrarenal aortic aneurysms associated with proximal aortic dissection

BACKGROUND: Chronic abdominal and thoracic aortic dissections often present with concomitant infrarenal aortic dilatation. We conducted a retrospective review of 6 patients treated with endovascular stent grafts for coexisting aortic dissection and infrarenal aneurysm. METHODS: Six patients with suprarenal aortic dissections and infrarenal aortic aneurysms (AAA) had their AAAs treated with endovascular grafts. Grafts were constructed of balloon expandable Palmaz stents and expanded polytetrafluoroethylene graft. The device was inserted transfemorally and deployed under fluoroscopy. RESULTS: Successfully primary AAA exclusion was achieved in 5 patients. One patient required a supplemental stent placed above the endograft and into the true lumen to seal the endoleak. No aneurysm has enlarged, and all remain thrombosed for 9 to 24 months (mean 20). One type III dissection enlarged 2 weeks after endograft insertion. One patient had uncomplicated cephalad fenestration of a dissection by the endograft. CONCLUSIONS: Endovascular grafts may be used to treat coexisting AAA and aortic dissection. Attention to the site or sites of reentry of a dissection is essential to insure full aortic aneurysm exclusion. The fate of a chronic aortic dissection cephalad to an endovascularly treated AAA is unclear and will require longer follow-up.     

主动脉弓部病变杂交手术后并发症的原因分析及处理

目的 对主动脉弓部病变杂交手术后常见并发症的发生原因进行分析.方法 对2001年1月至2008年12月接受杂交手术的34例主动脉弓部病变患者的资料进行回顾性分析.其中男性28例,女性6例,年龄34～75岁,平均年龄56.7岁.主动脉央层27例,其中A型21例,B型6例;主动脉弓部真性动脉瘤7例.杂交手术包括升主动脉-无名动脉-左颈总动脉Y形旁路3例,升主动脉-左颈总动脉-左锁骨下动脉Y形旁路2例,升主动脉-左颈总动脉旁路连同冠状动脉旁路移植1例,左颈总动脉-右颈总动脉旁路13例,右颈总动脉-左颈总动脉及左颈总动脉-左锁骨下动脉旁路3例,左锁骨下动脉-左颈总动脉-右颈总动脉Y形旁路2例,左颈总动脉-左锁骨下动脉旁路9例.一期行腔内修复26例,分期行腔内修复8例.结果 总的并发症发生率为32.4%(11/34),其中致死性并发症发生率11.8%(4/34).并发症包括主动脉央层破裂1例,脑卒中2例,吻合口漏并假件动脉瘤2例,心肌梗死1例,肺栓塞1例,颈部血肿1例,内漏3例.除4例围手术期死亡外,其余病例随访6～50个月,平均28.6个月,均健康生存.结论 肤主动脉弓部病变杂交手术后的并发症较一般腔内修复术更为多见,降低致死性并发症的发生率是该手术获得进一步推广的关键.